The 2 litre models had a specified tyre size of 185/14 and the tyre of choice at the time was the Michelin XAS 185 HR 14, the first production tyre with asymmetrical tread which meant unheard of road-holding capabilities. The first examples were "H" rated so were safe up to 210kph (131mph) and were soon adopted by the racing fraternity. (click pictures below to enlarge).